Nippers.



' No. 690,925. Patented Jan. 14, I902. G. J. CAPEWELL. NIPPERS.

(Application filed Mar. 11, I991.)

(No Model.)

205272 ease 5 nipper.

" UNITED STATES a rnnrr FFlCE.

GEORGE J. CAPEWELL, OF HARTFORD, CONNECTICUT.-

NIPPERS.

SPECIFICATION forming part of Letters Patent- N 0. 690,925, elatedJanuary 14:, 1902. Application filed March 11, 1901. Serial No. 50,542.(No model.)

To all whom. it may concern:

Beit known that I, GEORGE J. CAPEWELL, a citizen of the United States,residing at Hartford, in the county of Hartford and State ofConnecticut, have invented certain new and useful Improvements inNippers, of which the following is a specification.

This invention relates to those cutting-nippers which have pivoted jawsthat are closed by a powerful toggle action when the handles are pressedtogether. Full cutting eifect cannot be obtained near the outer edges ofthe jaws of the nippers of this nature in common use on account of theyielding of the jointsan inherent defect of their construction.

The object of this invention is to so construct and arrange the parts ofnippers of this class that there will be no springing or sidewisetwisting when the outer edges of the jaws are being used for cutting,whereby the full force of the toggle action may be exerted at any pointfrom end to end along the jaws, thus increasing their durability andefficiency.

In the embodiment of the invention that is illustrated by theaccompanying drawings the shank of one jaw has a mortise, and occupyingthis mortise is the tenon-like shank of the other jaw. A pin passesthrough the shanks and holds the tenon in the mortise. Oneend of onehandle has a tenon that fits in the mortise of the jaw-shank and fits ina mortise in one end of the other handle, which handlemortise alsoreceives a part of the tenon of the jaw-shank. Pins pass through theparts and pivot the handle-tenon in the jaw-shank mortise and in thehandle-mortise and pivot the jaw-shank tenon in the handle-mortise. Aspring presses the handles apart and normally keeps the jaws open.

Figure 1 of the views shows a side elevation of a nipper that embodiesthe invention. Fig. 2 shows a View of one edge of the same Fig. 3 showsa view of the other edge. Fig. el shows in perspective one of the jaws.Fig. 5 shows in perspective the other jaw; and Fig. 6 shows a transversesection of the jaws, taken on the plane of the broken line a: a; of Fig.1 looking in the direction indicated by the arrows.

The views show the cutting-jaws l as formed integral with their shanks;but of course the 'as a tenon 6 to fit the mortise 3.

jaws could be made adjustable or removable with relation to their shanksin the usual manner. The shank 2 of one jaw hasa mortise 3. that extendsentirely through the shank and so divides it so as to form twocheek-pieces 4. The shank 5 of the other jaw is formed The checkpiecesof one jaw-shank and the tenon of the other jaw-shank are made so widethat when the tenon is inserted in the mortise and there held by the jawpivot-pin 7 the tenon extends to the back edge of the mortised shank andthe cheek-pieces extend to the back edge of the tenon-shank, so that, asillustrated in Fig. 6, the cheek-pieces closely embrace the tenon andform a wide bearing area, which will prevent any lateral twisting of thetenonshank with relation to the mortise-shank. The handle 8 has a tenon9 formed at one end to fitthe mortise 3. This handle-tenon is pivotallyheld in the shank-mortise by a pin 10. The handle 11 hasa mortise 12 inone end to receive the tenon 6, the shank-tenon being pivotally held inthe handle-mortise bya pin 13. The handle-tenon also fits into thehandle-mortise 12 and is there retained by the link'pivot-pin 14, whichis more remote from the jaw pivot-pin than either of the pins thatconnect the ends of the handles with the jawshank. A spring 15 normallythrusts the handles apart and tends to keep the jaws open, and astop-screw 16 is employed to limit the movement of the handles towardeach other. The ends 17 of the cheek-pieces are made to engage with theshoulders 18 of the tenonshank to limit the opening movement of thejaws. WVith this construction the jaws must always move toward eachother with their cutting edges parallel. All of the strain tending tospring or twist the partsas, for instance, when a piece of wire 19 isbeing out near the outer edges of the jaws, as illustrated in Fig. 6-isborne by the wide cheek: pieces of the mortised jaw-shank, that closelyembrace the tenon of the other jaw-shank, and no strain comes upon thepivot-pin. This being the case, the full force of the toggle action maybe exerted along the entire edges of the jaws, so that metal may be cutby the jawsnear their outer edges just as well as near the middle. Thisnot onlyincreases the efficiency of the nipper, but also adds to itsdurability, for although the jaws are pivotally connected (a simple andcheap construction) the jaws always move with their edges parallel, andthus are not liable to become nicked or broken at the outer ends oftheir edges.

I claim as my invention A nipper, consisting of a pair of cuttingjaws,the shank of one jaw having a mortise that divides it so as to form twocheek-pieces that extend the full width of both jaws, and

the shank of the other jaw having a tenon that fits the mortise and alsoextends the full width of both jaws between the cheek-pieces,

edge of the mortised shank, a jaw pivot-pin holding the tenon betweenthe cheek-pieces, a handle having a tenon fitting the mortise in theshank, a pin pivotally holding the handle-tenon in the sh ank-mortise, ahandle having a mortise, a pin pivotally holding the shank-tenon in thehandle-mortise,and a linkpin more remote from the jaw pivot-pin thaneither of the pins con neoting the ends of the handles with thejaw-shanks, pivotally holding the handle-tenon in the handle-mortise,substantially as specified.

GEORGE J. GAPEWELL.

Witnesses:

H. R. WILLIAMS, V. R. HoLooMB.

